Sikaflex 221 as Outer Seam Sealant?

Post by **bmouthboyo** » 03 Apr 2012, 10:30

Just a quick question, can I use Sikaflex 221 as an Outer Panel Sealant as well as an adhesive for poptop roof, panel to frame bracket etc?

I see people recommend 3M 8115 but had heard it has cause some problems so just wondering what people mainly use now?

Also can I check I understand the process correctly:
[*]Clean out seams as best as possible
[*]Treat with vactan
[*]Spray primer into seams
[*]Outer Seam sealant (thin bead)
[*]Primer
[*]Paint

Thanks

Post by **Jonnyb416** » 03 Apr 2012, 10:54

Don't forget the rear of the seam if you can get to it.

It did a little test a few months ago. Well I call it a test but the truth is I forgot to clean the rear of a seam. Cleaned and treated the front of the seam and within a few weeks the rust was back. So I then remembered to clean the seam again, front and back; now it is still rust free.

What are you cleaning the seams out with?

Jon.

Post by **bmouthboyo** » 03 Apr 2012, 10:58

Jonnyb416 wrote:Don't forget the rear of the seam if you can get to it.

It did a little test a few months ago. Well I call it a test but the truth is I forgot to clean the rear of a seam. Cleaned and treated the front of the seam and within a few weeks the rust was back. So I then remembered to clean the seam again, front and back; now it is still rust free.

What are you cleaning the seams out with?

Jon.

Well some I will be replacing panel so cleaning back to metal, the bits I cannot will have to be wire wheel, stanley knife etc. As best as I can without a grit blaster.

My main confusion is what to use on the outer seams, I will have a lot of sikaflex about as I am going to re attach my pop top with it but not sure if it is suitable.

Cheers

Post by **Jonnyb416** » 03 Apr 2012, 11:04

I am sure someone will advise on the exact stuff to use. I got some stuff called Soudaflex, half the price of Sikaflex and people on here told me it was good to use.

I got a Dremel for my birthday off the misses and that does a great job. I keep meaning to check Aldi for a cheap grit blaster.

Good luck with that!

Jon.

Post by **Cruz** » 03 Apr 2012, 11:37

Jonnyb416 wrote: I keep meaning to check Aldi for a cheap grit blaster.

Just missed them Johnny. There may be some stragglers in the shops

Post by **pmoc_2001** » 03 Apr 2012, 11:54

Hi,

I use 221.
-cur out all the gunk.
-Fertan all the seam (good feeling when you see it dribble inside the van)
- Leave for a day or 2.
- Fertan again. Leave to dry to dusty texture.
- brush with stiff bush
- clean with http://www.3mselect.co.uk/p-2239-3m-gen ... e-tin.aspx
- Apply coat of ferpox (1k epoxy primer)
- Let dry
- Just beofre beading 221 wipe with IPA - Gives 221 an extra sticky kick.
- bead
- let dry
- 1k ferpox over that.

Job done

Post by **Jonnyb416** » 03 Apr 2012, 11:56

Cruz wrote:
Jonnyb416 wrote: I keep meaning to check Aldi for a cheap grit blaster.

Just missed them Johnny. There may be some stragglers in the shops

I'm on my way right now. Cheers Cruz!

Post by **Cruz** » 03 Apr 2012, 12:06

March 11th to be exact Jon

http://www.aldi.co.uk/uk/html/offers/of ... nday12.htm" onclick="window.open(this.href);return false;

Post by **bmouthboyo** » 03 Apr 2012, 19:03

pmoc_2001 wrote:Hi,

I use 221.
-cur out all the gunk.
-Fertan all the seam (good feeling when you see it dribble inside the van)
- Leave for a day or 2.
- Fertan again. Leave to dry to dusty texture.
- brush with stiff bush
- clean with http://www.3mselect.co.uk/p-2239-3m-gen ... e-tin.aspx
- Apply coat of ferpox (1k epoxy primer)
- Let dry
- Just beofre beading 221 wipe with IPA - Gives 221 an extra sticky kick.
- bead
- let dry
- 1k ferpox over that.

Job done

Can I ask what IPA is and also where can you get ferpox from?

Post by **Oldiebut goodie** » 03 Apr 2012, 19:12

iso_propyl alcohol.
You can get the pox from the toms down at the local docks or red light district. (sorry couldn't resist it

)

Post by **Dazco** » 03 Apr 2012, 20:36

Only ipa I know is the drinking variety. Mmmmm and very tasty it is

Post by **pmoc_2001** » 03 Apr 2012, 20:56

I use a spray IPA. Used to use it to clean optical fibre back in the day.

http://uk.rs-online.com/web/p/precision ... s/0132508/" onclick="window.open(this.href);return false;

The stuff is great for that final clean and evaporates instantly.

Ferpox: I get it from a shop in Aachen Germany so might be a trek for you. but you can try here http://www.fertan.co.uk/" onclick="window.open(this.href);return false;

Post by **pmoc_2001** » 06 Apr 2012, 06:55

Just to add. I gently blow air into the seam to get maximum penetration of the Fertan

pmoc_2001 wrote:Hi,

I use 221.
-cur out all the gunk.
-Fertan all the seam (good feeling when you see it dribble inside the van)
- Leave for a day or 2.
- Fertan again. Leave to dry to dusty texture.
- brush with stiff bush
- clean with http://www.3mselect.co.uk/p-2239-3m-gen ... e-tin.aspx
- Apply coat of ferpox (1k epoxy primer)
- Let dry
- Just beofre beading 221 wipe with IPA - Gives 221 an extra sticky kick.
- bead
- let dry
- 1k ferpox over that.

Job done

Post by **bmouthboyo** » 10 Apr 2012, 20:52

Just to double check what does everyone here use as an outer seam sealant?

Also If i brush brush able seam sealant along any seams in the arches etc can I then cover with waxoyl?

Cheers

Post by **Doogs** » 10 Apr 2012, 22:22

Tigerseal for me seems to do the job

Club 80-90 Forums